 /*******************************************************************************
  * Copyright (c) 2004, 2005 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.ui.internal.presentations;

 import org.eclipse.jface.action.Action;
 import org.eclipse.ui.internal.WorkbenchMessages;
 import org.eclipse.ui.presentations.IPresentablePart;
 import org.eclipse.ui.presentations.IStackPresentationSite;

 public class SystemMenuCloseAll extends Action implements ISelfUpdatingAction {

     private IStackPresentationSite presentation;

     public SystemMenuCloseAll(IStackPresentationSite presentation) {
         this.presentation = presentation;
         setText(WorkbenchMessages.PartPane_closeAll);
     }

     public void dispose() {
         presentation = null;
     }

     public void run() {
         presentation.close(presentation.getPartList());
     }

     public void update() {
         IPresentablePart[] parts = presentation.getPartList();
         setEnabled(parts.length != 0);
     }

     public boolean shouldBeVisible() {
         return true;
     }

 }

